code: def empty_instance(cls) -> NumberTuple:
      return NumberTuple()
  
file_path: metricflow/metricflow/test/collection_helpers/test_merger.py
imports: from __future__ import annotations
  from dataclasses import dataclass, field
  from typing import List, Tuple
  from typing_extensions import override
  from metricflow.collection_helpers.merger import Mergeable
label_desc: Use image node_id 2 for calling the NumberTuple obj's underlying member method code with example usage: obj.empty_instance(cls) and returns: NumberTuple